\u82e5\u6bcf\u591a\u51fa\u4e24\u4e2a\u5947\u70b9\uff0c\u753b\u7684\u6b21\u6570\u5c31\u4f1a+1\uff0c\u6240\u4ee5\u7b54\u6848\u5c31\u662f \u5947\u70b9\u7684\u4e2a\u6570 \/<\/strong> 2\u3002<\/strong><\/p>\n\n\n\n <\/p>\n\n\n\n \u662f\u4e00\u9053\u5e76\u67e5\u96c6\u7684\u677f\u5b50\u9898\uff0c\u9700\u8981\u8def\u5f84\u538b\u7f29\u3002<\/strong><\/p>\n\n\n\n \u9898\u76ee\u53ef\u4ee5\u7528dfs\u8fdb\u884cn^2\u7684\u904d\u5386\uff0c\u901a\u8fc7\u4e24\u70b9\u7403\u5fc3\u8ddd\u79bb\u548c\u4e24\u7403\u534a\u5f84\u4e4b\u548c\u7684\u5b70\u5927\u5b70\u5c0f\u5224\u65ad\u4e24\u7403\u662f\u76f8\u4ea4\uff0c\u76f8\u5207\u8fd8\u662f\u76f8\u79bb\u3002<\/strong><\/p>\n\n\n\n \u7528\u4e86\u52a8\u6001\u89c4\u5212\u7684\u601d\u60f3\uff0c\u662f\u4e00\u9053\u5f88\u597d\u7684\u7ec3\u4e60floyd\u7684\u9898\u3002<\/p>\n\n\n\n \u751f\u6210\u6811\u7684\u6a21\u677f\u9898\u3002<\/strong><\/p>\n\n\n\n T1 Einstein\u5b66\u753b\u753b \u662f\u4e00\u9898\uff08\u4e00\u7b14\u753b\uff09\u6b27\u62c9\u8def\u7684\u6a21\u677f\u3002\u6b27\u62c9\u8def \u662f\u6307\u82e5\u4ece\u8d77\u70b9\u5230\u7ec8\u70b9\u7684\u8def\u5f84\u6070\u7ecf\u8fc7\u56fe\u4e2d\u6bcf\u6761\u8fb9\u4e00 […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_import_markdown_pro_load_document_selector":0,"_import_markdown_pro_submit_text_textarea":"","footnotes":""},"categories":[3,14],"tags":[],"class_list":["post-131","post","type-post","status-publish","format-standard","hentry","category-3","category-14"],"_links":{"self":[{"href":"https:\/\/forelink.top\/index.php\/wp-json\/wp\/v2\/posts\/131","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/forelink.top\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/forelink.top\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/forelink.top\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/forelink.top\/index.php\/wp-json\/wp\/v2\/comments?post=131"}],"version-history":[{"count":1,"href":"https:\/\/forelink.top\/index.php\/wp-json\/wp\/v2\/posts\/131\/revisions"}],"predecessor-version":[{"id":137,"href":"https:\/\/forelink.top\/index.php\/wp-json\/wp\/v2\/posts\/131\/revisions\/137"}],"wp:attachment":[{"href":"https:\/\/forelink.top\/index.php\/wp-json\/wp\/v2\/media?parent=131"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/forelink.top\/index.php\/wp-json\/wp\/v2\/categories?post=131"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/forelink.top\/index.php\/wp-json\/wp\/v2\/tags?post=131"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}![\"\"](\"https:\/\/forelink.top\/wp-content\/uploads\/2023\/05\/image-4-1024x894.png\")
<\/div><\/figure>\n\n\n\n\/\/\u5f53\u4e00\u4e2a\u65e0\u5411\u56fe\u7684\u5947\u70b9\u6570\u4e3a0\u6216\u80052\u7684\u65f6\u5019\r\n\/\/\u53ef\u4ee5\u4e0d\u91cd\u8fb9\u7684\u8d70\u5b8c\u6240\u6709\u70b9\r\n\/\/\u5947\u70b9\u4e3a\u5ea6\u4e3a\u5947\u6570\u7684\u70b9\r\n\/\/\u6240\u4ee5\u4e00\u5e45\u56fe\u8981\uff08\u5947\u70b9\u6570\/2\uff09\u7b14\u753b\u5b8c\r\n#include <iostream>\r\nusing namespace std;\r\nint du[1005];\/\/\u7edf\u8ba1\u4e00\u4e2a\u70b9\u7684\u5ea6\u6570\r\nint main(){\r\n\tint n,m; cin>>n>>m;\r\n\tfor(int i=1;i<=m;i++){\r\n\t\tint s,e;\r\n\t\tcin>>s>>e;\r\n\t\tdu[s]++;\r\n\t\tdu[e]++;\r\n\t\t\/\/\u65e0\u5411\u56fe\uff0c\u6240\u4ee5\u51fa\u5165\u5ea6\u76f8\u7b49\r\n\t}\r\n\tint ans=0;\r\n\tfor(int i=1;i<=n;i++)\r\n\t\tif(du[i]%2)\r\n\t\tans++;\r\n\t\tif(ans==0) cout<<\"1\";\/\/\u5c0f\u7279\u5224\r\n\t\telse cout<<ans\/2;\r\n\t\treturn 0;\r\n}\r\n<\/code><\/pre>\n\n\n\n
\n\n\n\nT2 \u5408\u6839\u690d\u7269\uff08\u5e76\u67e5\u96c6\uff09<\/h2>\n\n\n\n
![\"\"](\"https:\/\/forelink.top\/wp-content\/uploads\/2023\/05\/image-5-1024x792.png\")
<\/div><\/figure>\n\n\n\n#include <iostream>\r\nusing namespace std;\r\nint n,m,k;\r\nint f[1000005];\r\nvoid init(){\r\n\tfor(int i=1;i<=1000000;i++)\r\n\tf[i]=i;\r\n\treturn;\r\n}\/\/\u521d\u59cb\u5316\u662f\u5fc5\u987b\u7684\r\nint getf(int v){\r\n\tif(f[v]==v)\r\n\treturn v;\/\/\u67e5\u627e\u6839\u8282\u70b9\r\n\telse{\r\n\t\tf[v]=getf(f[v]);\r\n\t\treturn f[v];\/\/\u8def\u5f84\u538b\u7f29\r\n\t}\r\n}\/\/\u67e5\u627e\r\nvoid merge(int a,int b){\r\n\tint b1,b2;\r\n\tb1=getf(a);\r\n\tb2=getf(b);\r\n\tif(b1!=b2){\r\n\t\tf[b2]=b1;\r\n\t\t\/\/\u5de6\u9760\u539f\u5219\r\n\t}\r\n\treturn;\r\n}\/\/\u5408\u5e76\r\nint main(){\r\n\tcin>>n>>m>>k;\r\n\t\/\/n\u4e3a\u884c\u6570\uff0cm\u4e3a\u5217\u6570\r\n\tinit();\r\n\tfor(int i=1;i<=k;i++){\r\n\t\tint x,y;\r\n\t\tcin>>x>>y;\r\n\t\tmerge(x,y);\r\n\t}\r\n\tint sum=0;\r\n\tint tot=n*m;\r\n\tfor(int i=1;i<=tot;i++){\r\n\t\tif(f[i]==i)\r\n\t\tsum++;\r\n\t}\r\n\tcout<<sum;\r\n\treturn 0;\r\n}<\/code><\/pre>\n\n\n\n
\n\n\n\nT3 \u5976\u916a<\/h2>\n\n\n\n
![\"\"](\"https:\/\/forelink.top\/wp-content\/uploads\/2023\/05\/image-6-1024x992.png\")
<\/div><\/figure>\n\n\n\n#include <iostream>\r\n#include <cmath>\r\n#include <cstring>\r\n#include <stdio.h>\r\nusing namespace std;\r\nlong long int t,n,h,r;\r\nbool vis[1005],found;\r\nstruct ball{\r\n\tint x,y,z;\r\n}p[1004];\r\nbool link(ball a,ball b){\r\n\tlong long int dis=(pow(a.x-b.x,2)+pow(a.y-b.y,2)+pow(a.z-b.z,2));\r\n\t\/\/\u4e24\u70b9\u8ddd\u79bb\u7684\u5e73\u65b9\u4e0e2r\u7684\u5e73\u65b9\u5bf9\u6bd4\r\n\tif(dis>4*r*r) \r\n\t\treturn false;\r\n\telse return true;\/\/\u5982\u679c\u76f8\u4ea4\r\n}\r\nvoid dfs(int a){\r\n\tif(found==true) return;\r\n\tif(p[a].z+r>=h){\r\n\t\tfound=true;\r\n\t\treturn;\r\n\t}\r\n\tfor(int i=1;i<=n;i++){\r\n\t\tif(vis[i]==true) continue;\r\n\t\telse{\r\n\t\t\tif(link(p[a],p[i])){\r\n\t\t\t\tvis[i]=true;\r\n\t\t\t\tdfs(i);\r\n\t\t\t}\/\/\u5982\u679c\u76f8\u4ea4\r\n\t\t}\r\n\t}\r\n}\r\nint main(){\r\n\/\/\tfreopen(\"in.txt\",\"r\",stdin);\r\n\/\/\tfreopen(\"out.txt\",\"w\",stdout);\r\n\tcin>>t;\r\n\twhile(t--){\r\n\t\tfound = false;\r\n\t\tmemset(vis,false,sizeof(vis));\r\n\t\t\/\/\u521d\u59cb\u5316\r\n\t\tcin>>n>>h>>r;\r\n\t\tfor(int i=1;i<=n;i++){\r\n\t\t\tcin>>p[i].x>>p[i].y>>p[i].z;\r\n\t\t}\r\n\t\tfor(int i=1;i<=n;i++){\r\n\t\t\tif(p[i].z<=r){\r\n\t\t\t\tdfs(i);\r\n\t\t\t\t\/\/\u5982\u679c\u548c\u5e95\u8fb9\u76f8\u4ea4\u6216\u76f8\u5207\r\n\t\t\t}\r\n\t\t}\r\n\t\tif(found==true) cout<<\"Yes\"<<endl;\r\n\t\telse cout<<\"No\"<<endl;\r\n\t}\r\n\treturn 0;\r\n}<\/code><\/pre>\n\n\n\n
\n\n\n\nT4 \u707e\u540e\u91cd\u5efa\uff08\u6700\u77ed\u8def\uff09<\/h2>\n\n\n\n
![\"\"](\"https:\/\/forelink.top\/wp-content\/uploads\/2023\/05\/image-7-989x1024.png\")
<\/div><\/figure>\n\n\n\n#include <iostream>\r\n#include <stdio.h>\r\nusing namespace std;\r\nconst int inf=1e9+5;\r\nint map[205][205];\r\nint n,m,q,t[205];\r\nint st,ed,v;\/\/\u4e34\u65f6\u53d8\u91cf\r\nvoid init(){\r\n\tfor(int i=0;i<n;i++)\r\n\t\tfor(int l=0;l<n;l++){\r\n\t\tmap[i][l]=inf;\r\n\t}\r\n\tfor(int i=0;i<n;i++) map[i][i]=0;\r\n}\/\/\u521d\u59cb\u5316\r\nvoid updata(int x){\r\n\tfor(int i=0;i<n;i++){\r\n\t\tfor(int l=0;l<n;l++){\r\n\t\t\tmap[i][l]=min(map[i][l], map[i][x]+map[x][l]);\r\n\t\t}\r\n\t}\r\n}\r\nint main(){\r\n\/\/\tfreopen(\"in.txt\",\"r\",stdin);\r\n\/\/\tfreopen(\"out.txt\",\"w\",stdout);\r\n\tcin>>n>>m;\r\n\tinit();\r\n\tfor(int i=0;i<n;i++) cin>>t[i];\r\n\tfor(int i=0;i<m;i++){\r\n\t\tcin>>st>>ed>>v;\r\n\t\tmap[st][ed]=v;\r\n\t\tmap[ed][st]=v;\r\n\t\t\/\/\u5b58\u56fe\r\n\t}\r\n\tcin>>q;\r\n\tint cur=0;\r\n\twhile(q--){\r\n\t\tcin>>st>>ed>>v;\r\n\t\twhile(t[cur]<=v&&cur<n){\r\n\t\t\tupdata(cur);\r\n\t\t\tcur++;\/\/\u65f6\u95f4\u662f\u9010\u6e10\u53d8\u5927\u7684\uff0c\u6240\u4ee5\u5df2\u7ecf\u505a\u8fc7\u4e2d\u8f6c\u7684\u6751\u5e84\u4e0d\u4f1a\u518d\u7528\u5230\r\n\t\t}\r\n\t\tif(t[st]>v||t[ed]>v||map[st][ed]==inf) cout<<\"-1\"<<endl;\r\n\t\telse cout<<map[st][ed]<<endl;\r\n\t}\r\n\treturn 0;\r\n}<\/code><\/pre>\n\n\n\n
\n\n\n\nT5 \u806a\u660e\u7684\u7334\u5b50<\/h2>\n\n\n\n
![\"\"](\"https:\/\/forelink.top\/wp-content\/uploads\/2023\/05\/image-8-1018x1024.png\")
<\/div><\/figure>\n\n\n\n#include <iostream>\r\n#include <algorithm>\r\n#include <cstring>\r\nusing namespace std;\r\nstruct edge{\r\n\tint s,e;\r\n\tlong long int v;\r\n}p[1000005];\r\nint f[1005];\r\nint x[1005],y[1005];\r\nint M,mk[505],n;\r\nint ans;\r\nint cnt;\r\nint getf(int x){\r\n\tif(f[x]==x) return x;\r\n\telse{\r\n\t\tf[x]=getf(f[x]);\r\n\t\treturn f[x];\r\n\t}\r\n}\r\nbool merge(int x,int y){\r\n\tint x1,y1;\r\n\tx1=getf(x);\r\n\ty1=getf(y);\r\n\tif(x1!=y1){\r\n\t\tf[x1]=y1;\r\n\t\treturn true;\r\n\t}\r\n\treturn false;\/\/\u5df2\u7ecf\u8054\u901a\r\n}\r\nvoid init(){\r\n\tfor(int i=1;i<=n;i++){\r\n\t\tf[i]=i;\r\n\t}\r\n\treturn;\r\n}\r\nlong long int len(int x1,int y1,int x2,int y2){\r\n\treturn (x1-x2)*(x1-x2)+(y1-y2)*(y1-y2);\/\/\u8fd4\u56de\u8ddd\u79bb\u7684\u5e73\u65b9\r\n}\r\nbool cmp(edge a,edge b){\r\n\treturn a.v<b.v;\r\n}\r\nint main(){\r\n\tcin>>M;\r\n\tfor(int i=1;i<=M;i++){\r\n\t\tint aa; cin>>aa;\r\n\t\tmk[i]=aa*aa;\r\n\t}\r\n\tsort(mk+1,mk+1+M);\r\n\tcin>>n;\r\n\tinit();\r\n\tfor(int i=1;i<=n;i++){\r\n\t\tcin>>x[i]>>y[i];\r\n\t}\/\/\u8bfb\u5165\u6570\u636e\r\n\tfor(int i=1;i<=n;i++){\r\n\t\tfor(int l=i+1;l<=n;l++){\r\n\t\t\tlong long int lens;\r\n\t\t\tlens=len(x[i],y[i],x[l],y[l]);\r\n\t\t\tcnt++;\r\n\t\t\tp[cnt].s=i;\r\n\t\t\tp[cnt].e=l;\r\n\t\t\tp[cnt].v=lens;\r\n\t\t\t\/\/\u8bfb\u5165\u6240\u6709\u8fb9\r\n\t\t}\r\n\t}\r\n\tint time=n*(n-1)\/2;\r\n\tsort(p+1,p+1+time,cmp);\/\/\u5bf9time\u6761\u8fb9\u8fdb\u884c\u6392\u5e8f\r\n\tcnt=0;\r\n\tlong long int max=0;\r\n\tfor(int i=1;i<=time;i++){\r\n\t\tif(merge(p[i].s,p[i].e)){\r\n\t\t\tcnt++;\r\n\t\t\tmax=p[i].v;\r\n\t\t}\r\n\t\tif(cnt==time-1) break;\r\n\t}\r\n\tfor(int i=M;i>=1;i--){\r\n\t\tif(mk[i]>=max) ans++;\r\n\t\telse break;\r\n\t}\r\n\tcout<<ans;\r\n\treturn 0;\r\n}<\/code><\/pre>\n\n\n\n
\n","protected":false},"excerpt":{"rendered":"